[media] coda: simplify optional reset handling

As of commit bb475230 ("reset: make optional functions really
optional"), the reset framework API calls use NULL pointers to
describe optional, non-present reset controls.

This allows to return errors from devm_reset_control_get_optional
without special cases and to call reset_control_reset unconditionally.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/platform/coda/coda-common.c

@@ -2062,7 +2062,6 @@ static int coda_hw_init(struct coda_dev *dev)
 	if (ret)
 		goto err_clk_ahb;
 
-	if (dev->rstc)
 	reset_control_reset(dev->rstc);
 
 	/*
@@ -2447,14 +2446,9 @@ static int coda_probe(struct platform_device *pdev)
 	dev->rstc = devm_reset_control_get_optional(&pdev->dev, NULL);
 	if (IS_ERR(dev->rstc)) {
 		ret = PTR_ERR(dev->rstc);
-		if (ret == -ENOENT || ret == -ENOTSUPP) {
-			dev->rstc = NULL;
-		} else {
-			dev_err(&pdev->dev, "failed get reset control: %d\n",
-				ret);
+		dev_err(&pdev->dev, "failed get reset control: %d\n", ret);
 		return ret;
 	}
-	}
 
 	/* Get IRAM pool from device tree or platform data */
 	pool = of_gen_pool_get(np, "iram", 0);